小阻力扣件有荷阻力取值分析  

Analysis on Load Resistance Value of Small Resistance Fastener

作　　者：曾真[1] 付廷龙[2] 马红超[1] 肖杰灵[1] 

机构地区：[1]西南交通大学土木工程学院,成都610031 [2]哈尔滨铁路局工务处,哈尔滨150006

出　　处：《路基工程》2011年第1期19-20,24,共3页Subgrade Engineering

基　　金：国家自然科学基金主任基金项目(50848015)

摘　　要：进行有荷载情况下的扣件阻力试验可验证和完善桥上无缝线路扣件纵向阻力取值计算理论。试验表明,有载情况下小阻力扣件的弹性位移值、纵向阻力值均与《送审稿》取值不符;在各级垂向荷载情况下,小阻力扣件的摩阻系数可偏安全取0.20,纵向阻力可采用垂向荷载值与摩阻系数的乘积而得。Resistance test of fastener under load can verify and improve the calculation theory of longitudinal resistance value of welded fasteners on bridge. It is indicated from test that elastic displacement and longitudinal resistance of small resistance fastener under load are not conforming to the values specified in the document for approval. Under vertical load at each stage, friction coefficient of small resistance fastener can be 0.20 for safety. Longitudinal resistance can be got by vertical load multiplying friction coefficient.

关 键 词：无缝线路 小阻力扣件 垂向荷载 纵向阻力 

分 类 号：U213.53[交通运输工程—道路与铁道工程]